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力学与实践 ›› 2020, Vol. 42 ›› Issue (1): 50-55.doi: 10.6052/1000-0879-19-208

• 应用研究 • 上一篇    下一篇

竖向载荷作用下框架结构力学模型的简化与计算1)

金波*, 2), 邓露*, 刘又文, 周旺**   

  1. * 湖南大学土木工程学院,工程结构损伤诊断湖南省重点实验室,长沙 410082;
    † 湖南大学机械与运载工程学院,长沙 410082;
    ** 中机国际工程设计研究院有限公司,长沙 410021
  • 收稿日期:2019-06-03 发布日期:2020-03-13
  • 通讯作者: 2)金波,博士,副教授,主讲结构力学,研究方向为结构优化设计。E-mail: jinbo@hnu.edu.cn
  • 基金资助:
    1)湖南大学中央教育教学改革专项资助项目

MECHANNICAL MODEL AND CALCULATION OF FRAME STRUCTURES UNDER VERTICAL LOADING1)

JIN Bo*, 2), DENG Lu*, LIU Youwen, ZHOU Wang**   

  1. * College of Civil Engineering, Key Laboratory for Damage Diagnosis of Engineering Structures of Hunan Province, Hunan University, Changsha 410082, China;
    † College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China;
    ** China Machinery International Engineering Design & Research Institute Co., Ltd, Changsha 410021, China
  • Received:2019-06-03 Published:2020-03-13

摘要: 针对结构力学与工程结构设计中力学模型和载荷作用方式的简化,分别采用一次性加载法、模拟施工三加载法和分层法,研究了竖向载荷作用下框架结构力学模型的简化与计算,分析了三种方法的计算假定和计算结果,给出了合理适用范围。一次性加载法更适用于抗连续性倒塌分析和建筑结构改造设计计算,模拟施工三加载法更适用于新建工程的设计计算,分层法作为一种简化的手算方法可作为理解结构力学原理的基本方法。

关键词: 结构力学, 力学模型, 分层法, 一次性加载法, 模拟施工

Abstract: For simplifying the mechanical models and the loading patterns in structural mechanics and the design of engineering structures, three methods, including a semi-static loading method, a three-step loading method for simulating the construction process and a multi-layer method, are adopted to study the simplification and the calculation of the mechanical models of frame structures under the action of vertical load. The assumptions made in the calculation by the three methods and the calculation results are analyzed, and reasonable scopes for the application are suggested. The results demonstrate that the semi-static load method is more suitable for the analysis of the progressive collapse and the design and the calculation of the building structure modification while the three-step loading method is more applicable for the design and the calculation of new projects. In addition, as a simplified calculation method by hand, the multi-layer method can be used as a basic method for understanding the principles of structural mechanics.

Key words: structural mechanics, mechanical model, multi-layer method, a semi-static load method, construction simulation

中图分类号: 

  • O342